Air distributing nozzle



Aug. 5, 1952 E. H. ACKERMAN AIR DISTRIBUTING NOZZLE Filed Aug. 21, 1946 l E NTO R 50 weep/9.996 KEMHNIV [u-M M r m ATTORNEYS Patented Aug. 5, 1952 M fas oaowi AIR DISTRIBUTING NOZZLE Edward H. Ackermann, Milwaukee, Wis.

' Application August 21, 194c, 'sr "ia1fm. 91,968

' whims. ,(Cl. 2994 This invention'relates to a ing apparatus, and it is particularly concerned with a structure which is arranged to receive air under pressure'and to distribute thesame evenly over a large surface area, as that of a glass show window. H 7

.Windows' lose their function when cloudedby the condensation or freezing of moisture there on. To remedy this condition, resort is normally had to a fan or other conventional wind instrument to clear the glass. ;The blastof air so provided; however,"does noteifectively clear all areas of the window.

It is an object of this invention to provide apparatus which is adapted to remove frost or conwindow defrostv densation from a large show window by distrib uting a current of air evenly thereover. Still another object is to provide apparatus of this character which is readily portable and is relatively inconspicuous when in an operative position against the base of a show window.

Other objects of this invention will be apparent from a consideration of the following description, taken in conjunction with the accompanying drawing, wherein:

Fig. 1 is a view in perspective of an air distributing apparatus embodying the features of the present invention, the apparatus being con nected to an air blower and mounted at the base of a show window.

Fig. 2 is another view in perspective of the apparatus, to a greatly enlarged scale, with a portion of a side plate and the top plate being broken away.

Fig. 3 is a front elevation of the apparatus, again on a reduced scale, with a portion of the apparatus being shown in a section taken along the line 3-3 in Fig. 2.

Referring more in detail to the drawing, wherein like parts bear like reference numerals:

The apparatus of my invention comprises a bottom member 4, a back plate 5, side plates 6 and 1, top plate 8, and interior partition members 9, [0, H, [2, l3 and I4. The respective side and top plates 6, l and 8, as well as bottom member 4, converge adjacent the forward, or air inlet, portion of the apparatus to form a throat [5. For convenience in attaching a blower IE, or other source of air supply, an open-ended chamber of the type indicated at I! may be provided adjacent the throat l5.

The bottom 4 is a horizontal member arranged to be set on the floor, and it flares outwardly from the throat [5 to its position of union along the full width of the bottom margin of back plate 5 This back plate is a rectangular me her normally disposed in a vertical plane for emplacement against a show'window. Sideplates Band T-and top plate 8 also flare somewhat out--' 'wardly from the throat l5, and they extend to" a position-of uniform spacing from the side and top margins of back plate 5.

Partitions 9, H), II, i2, I3 and I4 in-general Y have theshape of right triangles from which the tip of one leghas been removed to form a short,

fourth side which parallels the other leg. These partitions are perpendicularly disposed'withrespect to back plate 5, and their shortened legs extend along the inner surface of this plate while their other legs run generally parallel to, but are spaced somewhat above, bottom member 4. Adjacent partitions converge somewhat towards their bottom, and partitions 9 and I4 likewise are inwardly convergent with respect to the bottom member 4.-

Side plates 6 and l and top plate 8 are supported along the hypotenuse portions of the triangular partitions 9, 10, ll, l2, l3 and I4, side plates 6 and 1 thereby being outwardly convergent with the side margins of back plate 5, while top plate 8 is outwardly convergent with respect to the top margin of the back plate. The surfaces formed on the partitions by cutting oif a leg portion thereof extend from the rear edge of the side and top plates to the adjacent margins of the back plate, the side and top members being thereby uniformly spaced from the back plate.

By positioning the partitions somewhat above the bottom 4, there is provided adjacent the bottom a plenum chamber l8 which receives the air provided to the apparatus by the blower [6. From this plenum chamber, air is distributed out of the apparatus through ducts defined by adjacent partitions, the back plate, and a side or top plate. Due to the divergence of adjacent partitions, air is discharged from those ducts along the surface of the window in a series of adjacent segments, each of which becomes uniformly wider as it leaves the distributing structure. Convergence of the side and top plates with the rear plate not only directs the air toward the plane of the rear plate (and hence toward the window), but tends to equalize the flow by decreasing the front-tor-ear dimension of each duct as its lateral dimension increases. By virtue of this fact, and since the air isdischarged close to, and toward, the window, efficient clearing of moisture or frost from all portions of the window is obtained.

The device can be constructed of a light metal,

or of wood, for example, and as seen in Fig. 1, need not be large. The apparatus is therefore readily portable and maybe set up adjacent any desired window.

I claim:

'1. An air distributing structure comprising in combination a bottom, an end wall connected with the bottom at one end of the structure, means cooperative with the bottom at the other end of thestruetu reto provide an inlet throat w side walls connected with the throat'mea-ns-anddivergent from each other toward the end wall,

a top connected with the side walls and divergi-L. ing from the bottom toward the end wall iti e respective ends of said sides and top remote from the throat being spaced substantially;uniformly;

from the end wall, and spacedthereirp n t pro;1

vide an outlet, and a series of spaced partitions" enclosed by said bottom, top, side andgendgto define air fiow channels between said inlet and 20 Quest; nergies-anteater; er sntr r mi sil -at istr buii e temwares me ters;

; waste;-

Number; T v

4 and diverging upwardly from the bottom member from the throat toward the end wall, said bottom member, end wall member, sidewall members, partitions, and top member providing a set of air passages of progressively increasing cross section flaring outwardly from said throat toward said end wall member and for which said side and top members provide outlet slots adjacent said end wall member and a series of partitions mounted above said bottom member] and extendingbetween' saidend wall and the side wall and topmembers, said partitions being'perpendicularly disposed with respect to the end wall and benga ng iarly divergent from each other.

EDWARD H. ACKERMANN.

REFEEENCES CITED he following references are of record in the file bet-his patent:

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